In the statement below:
Although the Argentine ant is neither poisonous nor predatory, individual colonies cooperate in a super-colony so large that its collective appetite can become a competitive threat to bird, lizard, and other insect populations.
1)How is super-colony the antecedent for its?
2) Isn't the Argentine Ant supposed to be the antecedent for its?
3) Why is 'individual colonies' not the antecedent for its?
Thank You,
Sandeep